Parameters

DeviceInfoSet [in]

A handle to a device information set. This device information set contains a device interface for which to retrieve an array of the device property keys that represent the device properties that are set for a device interface.

DeviceInterfaceData [in]

A pointer to an SP_DEVICE_INTERFACE_DATA structure that represents the device interface for which to retrieve the requested array of device property keys.

PropertyKeyArray [out, optional]

A pointer to a buffer that receives an array of DEVPROPKEY-typed values, where each value is a device property key for a device property that is set for the device interface. The pointer is optional and can be NULL. For more information, see the Remarks section later in this topic.

PropertyKeyCount [in]

The size, in DEVPROPKEY-typed elements, of the PropertyKeyArray buffer. If PropertyKeyArray is NULL, PropertyKeyCount must be set to zero.

RequiredPropertyKeyCount [out, optional]

A pointer to a DWORD-typed variable that receives the number of requested device property keys. The pointer is optional and can be set to NULL.

Flags [in]

This parameter must be set to zero.

Return value

The function returns TRUE if it is successful. Otherwise, it returns FALSE, and the logged error can be retrieved by calling GetLastError.

The following table includes some of the more common error codes that this function might log.

Return code

Description

ERROR_INVALID_FLAGS

The value of Flags is not zero.

ERROR_INVALID_HANDLE

The device information set that is specified by DevInfoSet is not valid.

ERROR_INVALID_DATA

An internal data value is not valid.

ERROR_INVALID_PARAMETER

A parameter is not valid. One possibility is that the device interface that is specified by DevInterfaceData is not valid.

ERROR_INVALID_USER_BUFFER

A user buffer is not valid. One possibility is that PropertyKeyArray is NULL, and PropertKeyCount is not zero. .

ERROR_NO_SUCH_DEVICE_INTERFACE

The device interface that is specified by DeviceInterfaceData does not exist.

ERROR_INSUFFICIENT_BUFFER

The PropertyKeyArray buffer is not large enough to hold all the requested property keys.

ERROR_NOT_ENOUGH_MEMORY

There was not enough system memory available to complete the operation.

Remarks

If the PropertyKeyArray buffer is not large enough to hold all the requested property keys, SetupDiGetDeviceInterfacePropertyKeys does not retrieve any property keys and returns ERROR_INSUFFICIENT_BUFFER. If the caller supplied a RequiredPropertyKeyCount pointer, SetupDiGetDeviceInterfacePropertyKeys sets the value of *RequiredPropertyKeyCount to the required size, in DEVPROPKEY-typed values, of the PropertyKeyArray buffer.